External drive box



FIG. 1 is a front, right and top perspective view of an external drive box showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines showing a rear wall and a bottom wall in FIGS. 3 and 7, respectively, are environmental only and form no part of the claimed design. 

The ornamental design for an external drive box, as shown and described. 